/*
 * Copyright (c) 2017-present, CV4J Contributors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.cv4j.core.filters;

import com.cv4j.core.datamodel.ImageProcessor;

import java.util.Optional;

/**
 * 接触过滤
 *
 * @author dev
 * @date 2021/07/22
 */
public class ExposureFilter extends BaseFilter {
    /**
     * 做的过滤器
     *
     * @param src src
     * @return {@link ImageProcessor}
     */
    @Override
    public Optional<ImageProcessor> doFilter(ImageProcessor src) {
        int tr = 0;
        int tg = 0;
        int tb = 0;
        int size = RED.length;
        for (int i = 0; i < size; i++) {
            RED[i] = (byte) ~RED[i];
            GREED[i] = (byte) ~GREED[i];
            BLUE[i] = (byte) ~BLUE[i];
        }
        return Optional.ofNullable(src);
    }
}
